Adjustable bearing



(no Model.)

B. J. MULLER. ADJUSTABLE BEARING- ANDREW BGRAHAM. PHOTWUTHQWASHINGTORRC.

' UNITED STATES PATENT OFFICE.

. ERNST J. MULLER, OF BUTTE, MONTANA.

ADJUSTABLE BEARING.

SPECIFICATION forming part of Letters Patent No. 548,810, dated October29, 1895.

Application filed Apn'119, 1895. I Sierial No. 546,310. (No model.)

To all whom, it may concern.- Be it known that I, ERNST J. MULLER, 0Butte, in the county of Silver Bow and State of Montana, have inventedcertain new and useful Improvements in Adjustable Bearings; and I dohereby declare that the following is a full, clear, and exactdescription of the invention, which will enable others skilled in theart to which it pertains to make and use the same, reference being hadto the accompanying drawings, and to the letters of reference markedthereon, which form a part of this specification.

Themain objects of my invention are to facilitate the adjustment of thebearing and the removal of shafting therefrom without disturbing itsadjustment, and generally to simplify and improve the construction andoperation of devices of this class.

It consists of certain peculiarities in the construction and arrangementof the component parts of the device, as hereinafter particularlydescribed, and pointed out in the claims.

In the accompanying drawings like letters designate the same parts inthe several views.

Figure 1 is a side elevation and partial vertical section cutting itsaxis transversely of an adjustable universal hanger-bearing embodying myinvention. Fig. 2 is a front elevation and vertical section on the line2 2, Fig. 1. Fig. 3 is a horizontal section on the line 3 3, Fig. l; andFig. 4., a horizontal section on the line 4 4, Fig. l.

A designates a bracket for attachment to a ceiling or overhead supportin the usual way. It is formed on the front side with hubs a a, bored inthe same vertical line which intersects the axis of the box or bearing.The bracket" is formed between these hubs with a vertical elongatedrecess or opening (1 B is a yoke formed on opposite sides with hubs b,b, 12 and b the hubs b I) being bored and internally threaded in linewith each other and the hubs b and 12 being bored in line with eachother at right angles to the hubs b and b. i

O is the box, the lower half of which is formed integrally on oppositesides with hubs c 0, having squared portions 0 c, as shown in Figs. 2and 3, which are fitted between proje ctions c c on the cap, and thusassist to hold the parts of the box in their proper relation to eachother and to relieve the bolts 0 by which they are connected, of strain.The hubs c c are bored and threaded in line with each other at rightangles to the axis of the box.

D and D are pivot-pins having threaded portions which are adapted to bescrewed fast into the hubs c c. The pivot-pin D is formed with anenlarged angular head at and between its plain and screw-threadedportions with a shoulder adapted to abut against the end of the hub 0,into which it is screwed. The pivotpin D is fitted to turn and movelengthwise in the bore of hub 12 and is squared at its outer end toreceive a wrench.

E and E are like or similar pivotpins threaded at one end, so as .to bescrewed fast into the hubs b and b of yoke B; The pin E has an enlargedangular head e and a shoulder between its plain and screw-threadedportions, and the pinE is fitted to turn and move endwise in the bore ofhub a and is squared at its outer end to receive a wrench.

F is a hollow screw threaded in the bore of hub b and fitted on thepivot-pin D, which is adapted to turn therein. F is'a similar hollowscrew threaded in the bore of hub a and adapted to turn on the pivot-pinE. These screws are formed at their outer ends with squared portions fto receive a wrench for turning them, and they are made slightly shorterthan the distance between the heads and shoulders of the pins D and E,so as to prevent said pivot-pins from binding therein when theirshoulders are screwed snugly against the hubs b and c. The hubs or. andb are split through their outer and upper sides, respectively, andprovided with clampingbolts G and G for contracting them upon the hollowscrews and holding the latter in place when they are adjusted asdesired.

It will be observed that the axes of the several pivot-pins intersecteach other in the axis of the box 0, and said pins constitute, with theyoke B, a universal-joint connection with the bracket A, whereby the boxadapts itself readily to any deflection or irregularity in the shaftwhich it supports.

To adjust the box vertically, the screw G is loosened and the hollowscrew F is turned by means of its head or squared portionf in the properdirection to raise or lower the box, as desired. Whentherequiredadjustmentiseffected, the parts are secured in place by tightening thescrew G. The horizontal adjustment of the box is effected by a likemanipulation of the clam ping-screw G and the hollow screw F. If it isdesired to take down the shaft, the pivot-pins D and D may be unscrewedfrom the box G and the box removed with the shaft from the yoke 13 andbracket A, or the pivot-pins E and E may be unscrewed from the yoke andthe shaft, together with the box and yoke, removed from the bracket, ineither case without disturbing the adjustments of the bearing, it beingunnecessary to disturb the screws F and F.

It will be observed that by'the construction and arrangementof partsabove described the heads or squared portions ffof the adjustingscrews Fand F, as well as the heads of the pivot-screws D, D, E, and E, are allexposed and easily accessible, thus greatly facilitating the adjustmentsof the bearing and the taking down and putting up of shafting withoutdisturbing such adjustments.

I do not claim herein,per 86, a box formed integrally on one side with apivot-stem or a yoke formed integrally on opposite sides with stems orprovided with detachable stems, as shown in my application, Serial No.518,331, filed July 23, 1894; nordoIclaim herein abox provided with apivot pin or bar on which it is adapted to turn or swing freely, or ayoke formed integrally with pivot-pins, as shown in my application,Serial No. 535,664, filed January 21, 1895.

I claim- 1. In auniversal bearing the combination with a box and asuitable fixed support therefor, of a yoke, four pivot pins arranged inpairs perpendicular to each other, one pair with a box, of a fixedsupport having two bores in line with each other, one being threaded andprovided with a hollow screw, a yoke having two bores in line with eachother, one

being threaded and provided with a hollow screw, and pivot pins securedin pairs to opposite sides of the box and yoke transversely to eachother, one pair being adapted to turn in the hollow screw and oppositebore of the yoke, the other pair being adapted to turn in the hollowscrew and opposite bore of said support, and one pin of each pair beingheld from endwise movement in the hollow screw in which it is inserted,substantially as and for the purposes set forth.

3. In an adjustable bearing the combination of a box, a suitable fixedsupport, a yoke, said support and yoke each having a plain bore and asplit hub with a threaded bore in line therewith, and a clamping screwfor contracting its bore, hollow screws threaded in the split hubs ofsaid support and yoke, and pivot pins secured to opposite sides of thebox and yoke transversely to each other, and adapted to turn in thebores and hollow screws of said support and yoke, one pin of each pairbeing held from endwise movement in one of said hollowscrews,substantially as and for the purposes set forth.

4:. In an adjustable bearing the combination with a fixed support andyoke, each having a hollow screw threaded thereinand a plain cylindricalbore in line therewith, of a box and pivot pins threaded at their innerends into opposite sides of said box and yoke, and adapted to turn inthe hollow screws and bores of said yoke and support in linesintersecting the axis of the box and transverse to each other, the outerends of said screws and pins having exposed wrench heads, substantiallyas and for the purposes set forth.

5. In an adjustable bearing the combination with a fixed support, of ayoke pivotally connected therewith, a box formed on opposite sides withhubs having screw-threaded bores, a cap formed with lugs adapted toengage with said hubs and to hold said cap in place on the box, andpivot pins threaded into said hubs and adapted to pivotally connect thebox with said yoke in a line transverse to the pivot connection betweensaid yoke and support, substantially as and for the purposes set forth.

In testimony that I claim the foregoing as my own I affix my signaturein presence of two witnesses.

ERNST J. MULLER.

WVitnesses:

B. O. W. EVANS, JOHN B. MCCLERNAN.

